Table 5

Results of synovial fluid culture in NJI in Iceland 2003–2017

Bacterial isolatesChildren (<18 years) n=40Adults (≥18 years) n=259Total (%) n=299
Staphylococcus aureus††19 (48)137 (53)156 (52)
Staphylococcus lugdunensis 07 (3)7 (2)
Coagulase-negative Staphylococci1 (2.5)43 (17)44 (15)
Streptococcus agalactiae 08 (3)8 (3)
Streptococcus pneumoniae*1 (2.5)8 (3)9 (3)
Streptococcus pyogenes1 (2.5)9 (3.5)10 (3)
Streptococci group C or G1 (2.5)20 (8)21 (7)
Other Streptococci2 (5)8 (3)10 (3)
All Streptococci5 (12.5)53 (20)58 (19)
Escherichia coli 03 (1)3 (1)
Enterobacter cloacae 04 (1.5)4 (1)
Kingella kingae 11 (28)011 (4)
Other gram-negative rods‡1 (2.5)6 (2)7 (2)
All gram-negative rods12 (30)13 (5)25 (8)
Neisseria gonorrhoea 01 (0.4)1 (0.5)
Gram positive rods§3 (7.5)4 (1.5)7 (2)
Other¶1 (2.5)6 (2)7 (2)
Total**41264305
  • Data are no/no (%).

  • *Serotypes in year 2003: 22, 2004: 4, 12, 35, 2007: 19F, 6B, 2009: 6B, 2014: 21, 2016: 15B/C.

  • †Information on emm types was available in 9/10 isolates. Overall, seven different emm types were identified, the most common type was emm3 (33%), all three cases isolated after 2013. Other types were emm1, 12, 28, 81, 87, 89.

  • Burkholderia pseudomallei, Escherichia hermannii, Klebsiella oxytoca, Pasteurella multocida, Pseudomonas aeruginosa, Rosemonas species, Stenotrophomonas maltophilia.

  • §Bacillus species, Clostridium perfringens, Corynebacterium species, gram positive rods unspecified.

  • Aerococcus urinae, Enterococcus faecium, Lactococcus cremoris, Micrococcus species, anaerobic gram-positive cocci unspecified.

  • **Four patients had two bacterial species isolated, one had three.

  • ††Only Methicillin-susceptible S. aureus was isolated.

  • NJI, native joint infection.